Home / 855,914,814.50-1,284,311,509.14-407,725,770.20

Finding the Fourth Proportional to 855,914,814.50, 1,284,311,509.14 and 407,725,770.20

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Solution

The fourth proportional to 855,914,814.50, 1,284,311,509.14 and 407,725,770.20 is: 611,797,915.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,914,814.50 : 1,284,311,509.14 = 407,725,770.20 : x
  2. Step 2: Convert to fraction form
    855,914,814.50/1,284,311,509.14 = 407,725,770.20/x
  3. Step 3: Cross multiply
    855,914,814.50x = 1,284,311,509.14 × 407,725,770.20
  4. Step 4: Simplify right side
    855,914,814.50x = 523,646,899,240,830,848
  5. Step 5: Solve for x
    x = 523,646,899,240,830,848/855,914,814.50
  6. Step 6: Final answer
    x = 611,797,915.36

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.